Series high-pressure centrifugal pump for high heads.



PATBNTED JUNE 2, 1908 B. JACKSON. I SERIES HIGH PRESSURE GENTRIPUGAL PUMP FOR HIGH HEADS.

3 SHEETS-SHEET 1.

N0 MODEL.

PATENTED JUNE 2," 1903.

- B. JAGKSO N.

SERIES HIGH PRESSURE CENTRIFUGAL PUMP FOR HIGH HEADS.

APPLICATION FILED MAB. 4, 1903.

8 SHEETS-SHEET 2.

N0 MODEL.

i a i? 7/, a 1 I ,0 a K w M Wilma aw, I

, fld/ym.

PATENTED JUNE 2,1903.

Y B. JACKSON. SERIES HIGH PRESSURE GENTRIPUGAL PUMP FOR HIGH HEADS.

APPLICATION FILED MAR. 4, 1903.

3 SHEETS-SHEET 3 N0 MODEL.

UNIT D STATES.

Patented June 2, 1903.

Parents Ost ch.

. BYRON JAoKsoN, oF-s' N FRANCISCO, CALIFORNIA.

SERIES-HIGH- FRESSURE IENTI'RIFUGAL PUMP FOR HIGH HEADS.

SPEQIFICATION forming part of Letters Patent Nd 729,870, dated June 2, 1903.

' Application filed March 4, 1903. Serial No. 146,053. (No model.)

To all whom it may concern.-

, Be it known that I, BYRON JACKSON, a citi+ zen of the United States, residing in the city and county of San Francisco, State of California, have inventedcertain new and useful Improvements in Series High-Pressure (Jen; trifugal Pumps for High Heads; and I here by declare the following to be a.full,'c1ear,

and exact description of the, same.

My invention relates to improvements in seriespressure centrifugal .pumps for raising and forcing water by increasing pressure insuccessive steps, using the centrifugal im- 'pactive and cumulative forces setup by two or more rotating runners mounted upon the same shaft; and it consists of an improved adjustable automatic balance for end thrust on shafting and of casing-sections inclosingsuitably-curved waterways between the dis charge of one runner and the entrance of the next in the series, also theparts and the combination of parts hereinafter described and claimed.

Theobject of my invention is to provide a specific pump construction that is simple,

2 compact, efficient, practical, and operative,

and to utilize to the greatest extent possible the combination of centrifugal and impact forces and the energy due to the whirling ve-' 'locity and momentum of the water as it passes from one runner to the other and to obviate" the losses of power that are incident to pumps of this'class as far as possible by change of the course and velocity'of water,-also to prowide in combination therewith an automatic hydraulic end-thrust counterbalance means in the nature of anadjustable valve or plug .in line with the pump-shaft, wherebythe pressure exerted ina counterbalance-chain her may be controlled. The present invention in this latter respect is an improvement on the balancing device as specified and illustrated in a patentissued to me. entitled Centrifugal pump and dated November 11,1890,

construct a series high-pressure .pump sub shown in the A represents a circuIarLcase-section forming the first step or unit in series and iuclosing a large annular chamber concentric with the driving-shaft 4, in which chamber revolves one of the runners 3.

. A is a second circular case-section forming the second step or unit in the series and is a duplicate of A" 2 is the involute case-section and'the third and final step in the series and has a tangential discharge, as usual insingle-step pumps.

3 represents the runners of the inclosed type keyed to the revoluble shaft 4.

' 5 is the suction T'or- L; 5', the dischargenozzle; 6, adjustable plug-balancing valve,

to be described later; 7 and 7, cap-screws to, adjust balancing-plug; 8, pressure-counterbalance chamber between last runner of series and easing; 8', pressure counterbalance chamber for intermediate runners; 9,

shaft end bearing; 9,shaft-bearings within the casing; 10, curved waterways cored in the casing,guidin g water from one runner to the other; 11, Fig. 3, impelling-runner vanes; 12, annular flange cast on runner, forming a wall of. pressure chamber 8; 13, annular.

flange caston pump-cover, forming sliding joint with annular flange 12. have a sliding'fit to allow discharge pressure-water to percolate into chamber 8; 14, suction inlet-joint of a runner; 15, corresponding sliding joint on pump-case; 16, cover to pump-case section A; 17, annular flange cast on back of runner opposite suc.

tion-inlet horizontal-iype pump; 18, anufiilar flange cast on the inside of case horizo' tal pump, said flanges forrninga running and slidingjqint between the discharge-pressure These rings too and the inlet-pressure; 19, port through hub zo norm we series.

from Lhoruuner, which vary wiih .7

of last runner in series oommoaioming with chamber 8; '19, similar ports in hobs of the other rnimor'o,

The drawings hem show both horizontal 5 andveriaical shafis threw-stop series highdifi; pumps suitable for fonp-liuodred-foot hood. The pump-oases A ontiA' giro xiupiioate and may be repeated to any osiroii number.

The wooso 2 is iovoiute, and finoi oioohm'go :0 takes plaoe therefrom as a hinge-ma, no is usual with singloo t'op pumps. The fix'at oaoo section in ihe series fQlmS the 90%? for the one following it, and tho two are held togather by means of studs in one side of the case and & projecting flange on the opposite sg p'mve tho efiioioooy in high-(M53 prim ng.

The shape and dirooiion of those om-v-eii W2. too-ways are geomotlrioai on linoo spoosiog $0 the waterways ihroisgh tho no;

ionnor, the ohjeos being to mainzwo imi- 3o form-sootionai aroa and. long radius wives Lima avoiding ziny sodiion change o5 diiroo Lion of the visitor flow am: issiliz tho may memoir: and energy duo to the w iooity and impaoi: 13:19 oisoo from neri how oi ooo mono:- to tho senior 'of the next in sex-i623.

The runners 3 (shown in sooi'lion} are of the inolosed type proviiie wish suction or: inlet openings, ali faoing in tho some dive-o 4o iaion and with raiiia-l and iiaokwm'Qly-om l-6d vanes 11 on gsomotrioeii linoo, shown lo. Fig. 3. 1'

The waterway; 10, 4, are the traveling lines of the oigoiz of the runner and the quantity oi a-tor my charged, and the observance of a one rolml ioiv ship between bho curve and. pitch oi iooso W'r terways and the velocity and quantity of water is of tho utmost, importance.

It will be nomad that; the runnewvaoos ll are curved backward from center to poriph' my in relation to the dirootioo of rotation of the runner and no the line of Water discharge,

555, While tho Water-passages 1Q wiii curve forwardly in a lino of water discharge convoy" ing the water to the center of the mom ninnor, B so doing the lzioofio forces set; up in tho water by the whirling volooibios am 2:01;

lost, hm; mo pzmoed on so the maxi mono! in the series.

By wideiy oegmmiing the manor-chambers, inclining mile planes of the passage-ways 10 I relative to the axis of the runners, anti iitiliz- 55 i'ng long" radius ourvos whore ohangea of dimotion are necessary and having the waiis 10, 4, separating the passage-Ways con:

oee oio tinuous and smiling the runner-vanes book-- won-dig I provide for a, oat-oral progression fvom one: mono:- 00 another ami always continue tho water in the same dirooaion. Cfifi soquootiy them iii a, greater stimulated. force at (iioohmgo than where ihe passage-wags from one manor (:0 anotherciesoribe a loop $8? whore iiioy lie in a plane substsioiialiy at,

right angles to the runner-shaft and where the runner-vanes curve forwardly tho dirooiion of rotation of the runners, as C8F- min types of ooisisifogoi pumps.

A oopplomomai ooumorbalonoo for oaoii intermediate runner is formed in the boa: inoiosofi by the ammonia? flange 17 opposiie 21nd flange 18 on iho easing each of sai oimmbem cmoeoising iiiirougzh thoimo bf? the port/s 19 sail flanges forming a too oiiig mid siioiog joint ootwon tho iisohorgo ioioi essiizo.

"om soiiaolo s'aouroe is apoiio.

{W numoor o forooii ihroi {5 ways 19 of in rows, and is 6. U 6 or die 5 ii pros bion and aiisoims'go pump is imbalanood on inclosofi type of impoliors and iizofil o-qualiiy of prosouro anion o o opprozia to the number of inohos of area, of tho tiorpiniot multiplied by tho poumis groom of the total head pumped This oo mire, however, is novorequal to 'Eahe disoimrgopvossuro, which is varying, pending on the head, and no mom on otw side of tho x-omiei', depending on oom'az'ol posibiozi of l'lillfiel'fi fs prossure per inch greatest on the side having the grooiost dear-- once botweon mama-and pump-case, heoouso skin friction on ihe of runner pzoino mg ,pmnpingofioo z. "F.

vary ing pz'essor' the, end t-mvol o mo pompsia: v ging 1o oloamnce-spaoo boiwooo (he skies of the P1131165, F. have provided. the plug-valve 6, which is movabioio lino pump-casing in lime WiiL-h shaft 4on6; port; 19 This plug (and by plug is meow, its equivzilens, the sleeve 6 of Fig.2) has a, sliding fit wioh the walls of the Eat tor and i8; adogiileni to bezidvancoil or retraotoii to enter port, 19 or be withdrawn therefrom aooordiog as i i is dean-e6. Lo allow mom or loss baok-piessuro at-or in ohamber 8 to outer tho .i'orme-r again for .ihe purpose of motoring Q1 mzaiotaioiog oqiiilihz'iom In operation the book prossoro 11m to pm in p discharge, wili see relief oofiwoon flanges; 12 13 and produce pressure in chain to 8 io counterbalance the thrust exerted from the suction end of tho 3o op-case ami we o eompoosate fox-'1; F3

shaft. Whenever thepressureiin chamber 8 exceeds the pressure on the opposite side of. the runner, the latterwill move'with the shaft a short distance longitudinally until an out-' I combinationof an-incased revoluble shaft, a

let from-this chamber is afforded through pol-i119 and around the plug into the runner again, (at a point of greatly-reduced pres: sure.) When the pressure exerted from the' suction end is greater than from the discharge end, the runner and shaft will move toward the plug, closing the opening between the hub; and plug, when the pressure from the discharge entering chamber Swill again resist further travel'in that direction. In thismam nor the diflferential'of pressure upon one-side or the otheracts constantly under ordinary conditions to balance the runner and retain; it in its proper central position within .the' casing. Undersomeclrcumst-anccs,however; of variation in hydraulic pressure and oft-he driving force, as in the multiple or series form of pump, it has been fopnd-desirable to change the point of equilibrium of the rum; uers relative to the casing; The plug 6 and its adjusting-screws afiord a simple and perup screws 7 and by means of screws 7 move the end of the plug in the required distance,

whereupon the runners must move corre'-.

spondingly before the excess pressure in chamber 8 can escape into port 19. To shift the point of equiiibrium in the other direction, the plug is'inoved in that direction ac cordingly.

the inlets of all runners 3 are faced upward and are made of suficient'area that when pumping against the proposed head the pres-1 sure in pounds times the area will equal the total pressure or more of the shaft and revolving parts. The area of balancing-chainber 8 should ,be sufficient that when this chamber is connected through the port 19in the hub of runner with the lower pressure at the entrance or interior of runner the upthrust will be reduced. to exactly the weight of shaft and revolving parts, thus making an exact equilibrium between weight of shaft and water-pressure pumped against.

In constructinga horizontal pump, Fig. 2, a balance-chamber the opposite side of the runner of the same area of the suction-inlet is made of the two balancerings 17 and 18 on the runner and the casing, respectively, and connected through ports 19' to the suctionpressure at the inlet to runner, thus equalizing the pressure at inlet:

To balance the uncqualpressurc on the two sides of the runner, caused by-skin friction and greater clearance on one side than the other, I construct the balance-chamber 8 and plug.6 the same as described on the vertical pump.

in constructing the vertical pump, Fig. C1,";

Having thus described my invention, What I. claim, and desire to secure by LettersPatout, is--- i 1. In a high-pressure centrifugal pump,- the runner upon saidshaft, anannular space between the runrier and the end of the casing adjacent to the discharge-passage,-the latter and said chamber being in constant. communication, apassage connectingsaidchamber and the interiorispace o'f the runner, and a plug movable in relation to the endof the runner by which said passage may be controlled whereby the point of equilibrium of the runner may be varied-arbitrarily.

' 2. The combination in a high-pressure centrifugal pump, aninca'sed revolubleshaft, a {runner on-said shaft, a flange on the side of fixed flange on the casing corresponding to a said fiangegandforrning therewithra joint through which pressure-water may-percolate into the annular. inclos'ed'spacebetween the casing and runner, a port communicating. V with said space and the interior of 'the run-:5.

ner, and a movable plug in line with. said shaft and adapted to" fit within ,saidport for the purpose described. I

3. Thecombinatlon in a centrifugal pump,

of a casingwith inlet and discharge openings, 1 i I a shaft revoluble within the casing and hay ing a limited longitudinal movement, a run-.

ner upon said shaft, a movable sleeve in which the inner end of the shaft is journaled, annular passages betw'een-theend of the casing and the runner and in the runner-hub, con

necting the discharge-opening of the casing and the interior of theriinner, and means by which said sleeve may be shifted to arbitrarily regulate said passages;

4. The combination in a centrifugal pump, I

of an incased' revoluble shaft, one or more runners carried thereon, a no -rota.table sleeve in which the'discharge on of the shaftis rotatable, an annular chamber between the casing and the side of the runner adjacent to the sleeve, said umber having communication with the discharge of the runner, and also with the interior of the runner, and means by which said sleeve maybe shifted in the line of the shaft to regulate said communicationbet'ween said chamber and the I flange, a corresponding flange on the casing forming a running joint with the first-named flange, annular counterbalance-chambers inclosedby said'fianges, and ports in the hubs of the runners opposite the receivingropenthe runner oppositeto'the inlet-passage, a

. on the-pump-eeee the two flanges forming a a. plurality of impelliug-runners of maize eiesed type, rigid. thereon, and. turnehle there with, said. runners having flanges on their sides eppositethe inlet, corresponding flanges running endslidingjoint between the discharge-pressure and the inlet-pressure, ports connecting the chambers soineiosed by said flanges with the passageway of the runners, said runner passage-ways curved haekwardiy on geometrical lines and correspondinglyeurved waterways inthepump-caeingihmugh which the water diseharged frem one runner is delivered to a succeeding runner through a'eentral inlet-on the side adjacent; be the discharging-runner.

7. In a :series high pressure centrifugal pump, he combination 0f twe Oi more impelling-runnevs of the ihelesed type, a, shaft te which said runners are made fast, eonjoined ease Sections or units in which said mgners. are operable, semi runners having afnnuler flange on the heck opposite the in let, a corresponding flange on the pinup-ease sections, the two flanges farming a, running and sliding joint between the discherg'e e3 3 r:

lines, and said ease-sections, except the last, 35

heving corresponding waterways curved, ferwerd guiding and conveying the water from one pump-ease eeetien to the other.

8. In e series high-pressure centrifugal pump, the combineiien of an ineased revoiu; o

ble ehaffi, carrying a. plurality of runners at the ineloeed type, said runners having beekwerdiy-curved vanes, passage-ways cored in the casing and carved on geemetrieai lines relative to said runnevvenee, counierbal- 4g.

ance-ehambers between each runner aimi the easing, and an adjustable plug-valve in line with the shaft and; operetebie inrelemion to the counterbalance-chamber last; in series for the purpose of balancing the hydraulic thrust 50 with theend thrust of the driving-shaft. and limiting the end play within working limits. In witness whereof I have hereunto set my hand.

BYRON JACKSON. Wiimesses:

H NOURSE, Jessie C. BRODIE. 

